Case Annealing

 

The case annealer was built from scrap materials and only the torches are new.  Cost (not including time) was under $50.00.  The motor is an old rotisserie motor from a long gone grill.  The back plate is an old aluminum fan with the vanes broken off, but any plate would work.  The bearings and shaft  is the end plate off of an old gear reducer.  The shell holder is a scrap from the machine shop next door.  Guide rods are scrap as are the brackets.  The torches are held by a piece of scrap wood, but this will be improved to a more positive system as soon as I'm positive where the will sit.

This unit is fairly universal as to cases.  I put 223 cases in and 45-100 cases in it.  The shell holder has shims under it so it can be raised and lowered for different size cases.  The slots worked fine with all case sizes.

To operate, the torches are lit and adjusted to the case height and temperature desired.  Case are dropped into the slots and fall out the bottom annealed.  When I have more time, I will put a plate and guides on top which will automatically feed the case into the slots.  The machine is turning fast enough that a 3rd torch wouldn't hurt as I am only filling every other hole now.

annealer1.jpg (208574 bytes)  This is a photo of it in operation. The shell holder has slots at 20 degrees apart (they are .60 wide and .50 deep). Holes would work but the automatic feed wouldn't if I used holes.  With slots, I can move the guide rods closer if needed for smaller cases.  From my short trials, the incline angle tended to make any size case go where it was supposed to.

annealer2.jpg (213693 bytes) This is a good photo of the bearing plate and shell holder.

annealer3.jpg (221614 bytes)  This shows the guide rods and mounting.

annealer4.jpg (199475 bytes) A good photo of the rotisserie motor and bearing hub.

annealer5.jpg (195665 bytes) The drive motor.  It is held on with one bolt through the original mounting plate.  The shaft was cut to a 5/16" square and goes directly into the motor.  The motor is slightly loose in it's mounts and any missalignment is forgiven.

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